ScienceDaily: Strange Science News |
- Stimulated mutual annihilation: How to make a gamma-ray laser with positronium
- Undersea warfare: Viruses hijack deep-sea bacteria at hydrothermal vents
- Jupiter's moon Ganymede may harbor 'club sandwich' of oceans and ice
- Nearby galaxy is a 'fossil' from the early universe
- Humans have a nose for gender: Chemical cues influence perceptions of movement as more masculine or feminine
- Individual brain activity predicts tendency to succumb to daily temptations
- Stem cells from teeth can make brain-like cells
- 'Lonely' bacteria increase risk of antibiotic resistance
| Stimulated mutual annihilation: How to make a gamma-ray laser with positronium Posted: 01 May 2014 01:56 PM PDT Theorists expect that positronium, a sort of 'atom' consisting of an electron and an anti-electron, can be used to make a powerful gamma-ray laser. Scientists now report detailed calculations of the dynamics of a positronium BEC. This work is the first to account for effects of collisions between different positronium species. These collisions put important constraints on gamma-ray laser operation. |
| Undersea warfare: Viruses hijack deep-sea bacteria at hydrothermal vents Posted: 01 May 2014 12:10 PM PDT More than a mile beneath the ocean's surface, as dark clouds of mineral-rich water billow from seafloor hot springs called hydrothermal vents, unseen armies of viruses and bacteria wage war. |
| Jupiter's moon Ganymede may harbor 'club sandwich' of oceans and ice Posted: 01 May 2014 11:07 AM PDT The largest moon in our solar system, a companion to Jupiter named Ganymede, might have ice and oceans stacked up in several layers like a club sandwich, according to new NASA-funded research that models the moon's makeup. |
| Nearby galaxy is a 'fossil' from the early universe Posted: 01 May 2014 10:26 AM PDT Scientists analyzed the chemical elements in the faintest known galaxy, called Segue 1, and determined that it is effectively a fossil galaxy left over from the early universe. Stars form from gas clouds and their composition mirrors the chemical composition of the galactic gas from which they were born. |
| Posted: 01 May 2014 09:34 AM PDT The human body produces chemical cues that communicate gender to members of the opposite sex, according to new research. Whiffs of the active steroid ingredients (androstadienone in males and estratetraenol in females) influence our perceptions of movement as being either more masculine or more feminine. The effect, which occurs completely without awareness, depends on both our biological sex and our sexual orientations. |
| Individual brain activity predicts tendency to succumb to daily temptations Posted: 01 May 2014 08:17 AM PDT Activity in areas of the brain related to reward and self-control may offer neural markers that predict whether people are likely to resist or give in to temptations, like food, in daily life, according to new research. |
| Stem cells from teeth can make brain-like cells Posted: 30 Apr 2014 04:25 PM PDT Researchers have discovered that stem cells taken from teeth can grow to resemble brain cells, suggesting they could one day be used in the brain as a therapy for stroke. |
| 'Lonely' bacteria increase risk of antibiotic resistance Posted: 29 Apr 2014 05:52 AM PDT 'Lonely' microbes are more likely to mutate, resulting in higher rates of antibiotic resistance, research has concluded. "What we were looking for was a connection between the environment and the ability of bacteria to develop the resistance to antibiotics. We discovered that the rate at which E. coli mutates depends upon how many 'friends' it has around. It seems that more lonely organisms are more likely to mutate," the researchers say. |
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